I can't say the Post & duplex posts are thicker than the #4's but the posts on the Heavy duplex are thicker than the post & duplex posts. The center wires on the post & duplex and heavy duplex are about the same and the center area of the post & duplex is more narrow (posts closer together). Do a google search for post & duplex pictures. I can't find the link for my 24 hour campfire post a few years ago were I posted some pics of a FX-III 6x42 with the heavy duplex and some post & duplex pictures. I like the post & duplex more than the heavy duplex. The heavy duplex would have an edge for holding over for a long shot since the thin part of the reticle is longer between the posts.
Last edited by Dave_in_WV; 01/14/17.
